Home / 136,619.20-204,928.80-77,570.20

Finding the Fourth Proportional to 136,619.20, 204,928.80 and 77,570.20

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Solution

The fourth proportional to 136,619.20, 204,928.80 and 77,570.20 is: 116,355.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,619.20 : 204,928.80 = 77,570.20 : x
  2. Step 2: Convert to fraction form
    136,619.20/204,928.80 = 77,570.20/x
  3. Step 3: Cross multiply
    136,619.20x = 204,928.80 × 77,570.20
  4. Step 4: Simplify right side
    136,619.20x = 15,896,368,001.76
  5. Step 5: Solve for x
    x = 15,896,368,001.76/136,619.20
  6. Step 6: Final answer
    x = 116,355.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.